* linker problem with xip kernel and recent toolchains
@ 2012-12-04 14:46 Marc Kleine-Budde
2012-12-11 13:01 ` Pawel Moll
0 siblings, 1 reply; 9+ messages in thread
From: Marc Kleine-Budde @ 2012-12-04 14:46 UTC (permalink / raw)
To: linux-arm-kernel
Hello,
we've just discovered a linker problem with newer toolchains, that
support --build-id and xip kernels. The resulting vmlinux is about 13
MiB big, but the xipimage ~2GiB.
A look at the vmlinux's objdump shows that the .notes section is around
2 GiB and it's placed by the linker script into the RAM. With the ROM
starting at 0x0 this results into a ~2 GiB big image.
> [16] .data PROGBITS 88008000 0a0000 012aa0 00 WA 0 0 256
> [17] .notes NOTE 8801aaa0 0b2aa0 000024 00 AX 0 0 4
> [18] .bss NOBITS 8801aae0 0b2ac4 005414 00 WA 0 0 32
After discarding the .notes section in the objcopy (see patch below) the
resulting binary images has a proper size again.
Marc
index 1ec5f67..4448790 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -18,7 +18,7 @@ ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
LDFLAGS_vmlinux += --be8
endif
-OBJCOPYFLAGS :=-O binary -R .comment -S
+OBJCOPYFLAGS :=-O binary -R .comment -R .notes -S
GZFLAGS :=-9
#KBUILD_CFLAGS +=-pipe
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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^ permalink raw reply related [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-04 14:46 linker problem with xip kernel and recent toolchains Marc Kleine-Budde
@ 2012-12-11 13:01 ` Pawel Moll
2012-12-11 13:43 ` Marc Kleine-Budde
0 siblings, 1 reply; 9+ messages in thread
From: Pawel Moll @ 2012-12-11 13:01 UTC (permalink / raw)
To: linux-arm-kernel
Hi Marc,
On Tue, 2012-12-04 at 14:46 +0000, Marc Kleine-Budde wrote:
> we've just discovered a linker problem with newer toolchains, that
> support --build-id and xip kernels. The resulting vmlinux is about 13
> MiB big, but the xipimage ~2GiB.
>
> A look at the vmlinux's objdump shows that the .notes section is around
> 2 GiB and it's placed by the linker script into the RAM. With the ROM
> starting at 0x0 this results into a ~2 GiB big image.
>
> > [16] .data PROGBITS 88008000 0a0000 012aa0 00 WA 0 0 256
> > [17] .notes NOTE 8801aaa0 0b2aa0 000024 00 AX 0 0 4
> > [18] .bss NOBITS 8801aae0 0b2ac4 005414 00 WA 0 0 32
>
> After discarding the .notes section in the objcopy (see patch below) the
> resulting binary images has a proper size again.
Could you please send me the configuration you're using to get the XIP
kernel? I'll try to get my head around this problem and check how other
architectures are dealing with the problem.
Thanks!
Pawe?
^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-11 13:01 ` Pawel Moll
@ 2012-12-11 13:43 ` Marc Kleine-Budde
2012-12-11 13:52 ` Pawel Moll
2012-12-11 18:11 ` Pawel Moll
0 siblings, 2 replies; 9+ messages in thread
From: Marc Kleine-Budde @ 2012-12-11 13:43 UTC (permalink / raw)
To: linux-arm-kernel
On 12/11/2012 02:01 PM, Pawel Moll wrote:
> On Tue, 2012-12-04 at 14:46 +0000, Marc Kleine-Budde wrote:
>> we've just discovered a linker problem with newer toolchains, that
>> support --build-id and xip kernels. The resulting vmlinux is about 13
>> MiB big, but the xipimage ~2GiB.
>>
>> A look at the vmlinux's objdump shows that the .notes section is around
>> 2 GiB and it's placed by the linker script into the RAM. With the ROM
>> starting at 0x0 this results into a ~2 GiB big image.
>>
>>> [16] .data PROGBITS 88008000 0a0000 012aa0 00 WA 0 0 256
>>> [17] .notes NOTE 8801aaa0 0b2aa0 000024 00 AX 0 0 4
>>> [18] .bss NOBITS 8801aae0 0b2ac4 005414 00 WA 0 0 32
>>
>> After discarding the .notes section in the objcopy (see patch below) the
>> resulting binary images has a proper size again.
>
> Could you please send me the configuration you're using to get the XIP
> kernel? I'll try to get my head around this problem and check how other
> architectures are dealing with the problem.
What about putting the notes section into the read only segment, i.e.
the ROM?
.config is attached. It's against 3.6.10 + some patches. The problem
does not occur with our uclibc based toolchain, which doesn't crate a
.notes section, but it still happens with a newlib based one.
> ${CROSS_COMPILE}gcc -v
> Using built-in specs.
> COLLECT_GCC=/home/mol/vcs/OSELAS.Toolchain-2011.02/inst.keep/opt/OSELAS.Toolchain-2011.11.0/arm-cortexm3-eabi/gcc-4.7.2-newlib-1.19.0-binutils-2.22/bin/arm-cortexm3-eabi-gcc
> COLLECT_LTO_WRAPPER=/home/mol/vcs/OSELAS.Toolchain-2011.02/inst.keep/opt/OSELAS.Toolchain-2011.11.0/arm-cortexm3-eabi/gcc-4.7.2-newlib-1.19.0-binutils-2.22/bin/../libexec/gcc/arm-cortexm3-eabi/4.7.2/lto-wrapper
> Target: arm-cortexm3-eabi
> Configured with: /home/mol/vcs/OSELAS.Toolchain-2011.02/platform-arm-cortexm3-eabi-gcc-4.7.2-newlib-1.19.0-binutils-2.22/build-cross/gcc-4.7.2/configure --build=x86_64-host-linux-gnu --host=x86_64-host-linux-gnu --target=arm-cortexm3-eabi --enable-multilib --with-float=soft --with-fpu=vfp --with-cpu=cortex-m3 --with-mode=thumb --with-newlib --disable-__cxa_atexit --enable-sjlj-exceptions --disable-nls --disable-decimal-float --disable-fixed-point --disable-win32-registry --enable-symvers=gnu --with-pkgversion=OSELAS.Toolchain-2011.11.0 --enable-threads=single --with-system-zlib --with-gmp=/home/mol/vcs/OSELAS.Toolchain-2011.02/platform-arm-cortexm3-eabi-gcc-4.7.2-newlib-1.19.0-binutils-2.22/sysroot-host --with-mpfr=/home/mol/vcs/OSELAS.Toolchain-2011.02/platform-arm-cortexm3-eabi-gcc-4.7.2-newlib-1.19.0-binutils-2.22/sysroot-host --prefix=/home/mol/vcs/OSELAS.Toolchain-2011.02/inst/opt/OSELAS.Toolchain-2011.11.0/arm-cortexm3-eabi/gcc-4.7.2-newlib-1.19.0-binutils-2.22 --enable-langua
ges=c --enable-c99 --enable-long-long --enable-libstdcxx-debug --enable-profile --disable-shared --disable-libssp --enable-checking=release
> Thread model: single
> gcc version 4.7.2 (OSELAS.Toolchain-2011.11.0)
Here the readelf output:
ROM starts at 0x0
RAM starts at 88008000
> Section Headers:
> [Nr] Name Type Addr Off Size ES Flg Lk Inf Al
> [ 0] NULL 00000000 000000 000000 00 0 0 0
> [ 1] .bootloader PROGBITS 00000000 008000 000300 00 AX 0 0 8
> [ 2] .head.text PROGBITS 00000300 008300 00004c 00 AX 0 0 4
> [ 3] .text PROGBITS 00000360 008360 077844 00 AX 0 0 32
> [ 4] .text.init PROGBITS 00077ba4 07fba4 00009c 00 AX 0 0 4
> [ 5] .rodata PROGBITS 00078000 080000 00d9c8 00 A 0 0 32
> [ 6] __param PROGBITS 000859c8 08d9c8 0000a0 00 A 0 0 4
> [ 7] __modver PROGBITS 00085a68 08da68 000598 00 A 0 0 4
> [ 8] .ARM.unwind_idx ARM_EXIDX 00086000 08e000 000040 00 AL 3 0 4
> [ 9] .init.text PROGBITS 00086040 08e040 006b28 00 AX 0 0 8
> [10] .exit.text PROGBITS 0008cb68 094b68 0001f0 00 AX 0 0 4
> [11] .init.proc.info PROGBITS 0008cd58 094d58 000054 00 AX 0 0 2
> [12] .init.arch.info PROGBITS 0008cdac 094dac 000044 00 A 0 0 4
> [13] .init.tagtable PROGBITS 0008cdf0 094df0 000040 00 A 0 0 4
> [14] .init.data PROGBITS 0008ce30 094e30 000388 00 WA 0 0 4
> [15] .data PROGBITS 88008000 098000 012aa0 00 WA 0 0 256
> [16] .notes NOTE 8801aaa0 0aaaa0 000024 00 A 0 0 4
> [17] .bss NOBITS 8801aae0 0aaac4 005414 00 WA 0 0 32
> [18] .comment PROGBITS 00000000 0aaac4 000028 01 MS 0 0 1
> [19] .ARM.attributes ARM_ATTRIBUTES 00000000 0aaaec 00002b 00 0 0 1
> [20] .debug_line PROGBITS 00000000 0aab17 098048 00 0 0 1
> [21] .debug_info PROGBITS 00000000 142b5f 88b2f3 00 0 0 1
> [22] .debug_abbrev PROGBITS 00000000 9cde52 06a5dc 00 0 0 1
> [23] .debug_aranges PROGBITS 00000000 a38430 003b20 00 0 0 8
> [24] .debug_ranges PROGBITS 00000000 a3bf50 0296e0 00 0 0 8
> [25] .debug_frame PROGBITS 00000000 a65630 025388 00 0 0 4
> [26] .debug_str PROGBITS 00000000 a8a9b8 03ef39 01 MS 0 0 1
> [27] .debug_loc PROGBITS 00000000 ac98f1 169767 00 0 0 1
> [28] .shstrtab STRTAB 00000000 c33058 000141 00 0 0 1
> [29] .symtab SYMTAB 00000000 c33674 03bf70 10 30 11065 4
> [30] .strtab STRTAB 00000000 c6f5e4 0205da 00 0 0 1
I can put the kernel patches and the toolchain on our ftp for download.
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
-------------- next part --------------
#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 3.6.10 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_GENERIC_GPIO=y
CONFIG_NO_IOPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_VECTORS_BASE=0x00000000
CONFIG_PHYS_OFFSET=0x88000000
CONFIG_GENERIC_BUG=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_HAVE_IRQ_WORK=y
#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_FHANDLE is not set
CONFIG_HAVE_GENERIC_HARDIRQS=y
#
# IRQ subsystem
#
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_KTIME_SCALAR=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
# CONFIG_NO_HZ is not set
CONFIG_HIGH_RES_TIMERS=y
#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_PREEMPT_RCU is not set
# CONFIG_TREE_RCU_TRACE is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=12
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_NAMESPACES is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_ANON_INODES=y
CONFIG_EXPERT=y
# CONFIG_UID16 is not set
# CONFIG_KALLSYMS is not set
# CONFIG_HOTPLUG is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
# CONFIG_ELF_CORE is not set
# CONFIG_BASE_FULL is not set
# CONFIG_FUTEX is not set
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
CONFIG_TIMERFD=y
# CONFIG_EVENTFD is not set
# CONFIG_AIO is not set
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
#
# Kernel Performance Events And Counters
#
# CONFIG_PERF_EVENTS is not set
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_SLUB_DEBUG is not set
CONFIG_COMPAT_BRK=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_MMAP_ALLOW_UNINITIALIZED is not set
# CONFIG_PROFILING is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
#
# GCOV-based kernel profiling
#
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_BASE_SMALL=1
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
# CONFIG_LBDAF is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
# CONFIG_INLINE_SPIN_TRYLOCK is not set
# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK is not set
# CONFIG_INLINE_SPIN_LOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_READ_TRYLOCK is not set
# CONFIG_INLINE_READ_LOCK is not set
# CONFIG_INLINE_READ_LOCK_BH is not set
# CONFIG_INLINE_READ_LOCK_IRQ is not set
# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
CONFIG_INLINE_READ_UNLOCK=y
# CONFIG_INLINE_READ_UNLOCK_BH is not set
CONFIG_INLINE_READ_UNLOCK_IRQ=y
# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_WRITE_TRYLOCK is not set
# CONFIG_INLINE_WRITE_LOCK is not set
# CONFIG_INLINE_WRITE_LOCK_BH is not set
# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
CONFIG_INLINE_WRITE_UNLOCK=y
# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
# CONFIG_MUTEX_SPIN_ON_OWNER is not set
CONFIG_FREEZER=y
#
# System Type
#
# CONFIG_MMU is not set
# CONFIG_ARCH_SOCFPGA is not set
# CONFIG_ARCH_INTEGRATOR is not set
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_VEXPRESS is not set
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_HIGHBANK is not set
# CONFIG_ARCH_CLPS711X is not set
# CONFIG_ARCH_CNS3XXX is not set
# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_PRIMA2 is not set
# CONFIG_ARCH_EBSA110 is not set
CONFIG_ARCH_EFM32=y
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_MXC is not set
# CONFIG_ARCH_MXS is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_MVEBU is not set
# CONFIG_ARCH_DOVE is not set
# CONFIG_ARCH_KIRKWOOD is not set
# CONFIG_ARCH_LPC32XX is not set
# CONFIG_ARCH_MV78XX0 is not set
# CONFIG_ARCH_KS8695 is not set
# CONFIG_ARCH_W90X900 is not set
# CONFIG_ARCH_TEGRA is not set
# CONFIG_ARCH_PICOXCELL is not set
# CONFIG_ARCH_PNX4008 is not set
# CONFIG_ARCH_MSM is not set
# CONFIG_ARCH_SHMOBILE is not set
# CONFIG_ARCH_RPC is not set
# CONFIG_ARCH_SA1100 is not set
# CONFIG_ARCH_S3C24XX is not set
# CONFIG_ARCH_S3C64XX is not set
# CONFIG_ARCH_S5P64X0 is not set
# CONFIG_ARCH_S5PC100 is not set
# CONFIG_ARCH_S5PV210 is not set
# CONFIG_ARCH_EXYNOS is not set
# CONFIG_ARCH_SHARK is not set
# CONFIG_ARCH_NOMADIK is not set
# CONFIG_ARCH_DAVINCI is not set
# CONFIG_PLAT_SPEAR is not set
# CONFIG_ARCH_VT8500 is not set
# CONFIG_ARCH_ZYNQ is not set
CONFIG_MACH_EFM32GG_DK3750=y
# CONFIG_EFM32GG_DK3750_FPGA is not set
#
# Processor Type
#
# CONFIG_CPU_ARM7TDMI is not set
# CONFIG_CPU_ARM9TDMI is not set
CONFIG_CPU_V7M=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7M=y
CONFIG_CPU_ABRT_NOMMU=y
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_CACHE_V7M=y
CONFIG_CPU_CACHE_VIPT=y
#
# Processor Features
#
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARM_THUMB=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_ARM_L1_CACHE_SHIFT=5
CONFIG_ARM_NR_BANKS=8
# CONFIG_SET_MEM_PARAM is not set
CONFIG_DRAM_BASE=0x88000000
CONFIG_DRAM_SIZE=0x00400000
CONFIG_FLASH_MEM_BASE=0x00000000
CONFIG_FLASH_SIZE=0x00100000
CONFIG_ARM_NVIC=y
#
# Bus support
#
# CONFIG_PCI_SYSCALL is not set
# CONFIG_ARCH_SUPPORTS_MSI is not set
#
# Kernel Features
#
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_ARCH_NR_GPIO=0
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_HZ=100
CONFIG_THUMB2_KERNEL=y
CONFIG_ARM_ASM_UNIFIED=y
CONFIG_AEABI=y
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_VIRT_TO_BUS=y
CONFIG_NOMMU_INITIAL_TRIM_EXCESS=1
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CLEANCACHE is not set
CONFIG_FORCE_MAX_ZONEORDER=9
# CONFIG_SECCOMP is not set
# CONFIG_CC_STACKPROTECTOR is not set
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
#
# Boot options
#
# CONFIG_USE_OF is not set
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_CMDLINE=""
CONFIG_XIP_KERNEL=y
CONFIG_XIP_PHYS_ADDR=0x00000000
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_AUTO_ZRELADDR is not set
#
# CPU Power Management
#
# CONFIG_CPU_IDLE is not set
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
#
# Floating point emulation
#
#
# At least one emulation must be selected
#
#
# Userspace binary formats
#
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_BINFMT_FLAT=y
# CONFIG_BINFMT_ZFLAT is not set
CONFIG_BINFMT_SHARED_FLAT=y
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
# CONFIG_BINFMT_MISC is not set
#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
# CONFIG_PM_RUNTIME is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_PM_CLK=y
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
# CONFIG_NET is not set
CONFIG_HAVE_BPF_JIT=y
#
# Device Drivers
#
#
# Generic Driver Options
#
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
# CONFIG_FW_LOADER is not set
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
# CONFIG_DMA_SHARED_BUFFER is not set
CONFIG_MTD=y
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
# CONFIG_MTD_AFS_PARTS is not set
# CONFIG_MTD_AR7_PARTS is not set
#
# User Modules And Translation Layers
#
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLKDEVS=y
# CONFIG_MTD_BLOCK is not set
CONFIG_MTD_BLOCK_RO=y
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
#
# RAM/ROM/Flash chip drivers
#
# CONFIG_MTD_CFI is not set
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
# CONFIG_MTD_RAM is not set
CONFIG_MTD_ROM=y
# CONFIG_MTD_ABSENT is not set
#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
CONFIG_MTD_UCLINUX=y
# CONFIG_MTD_UCLINUX_EBSS is not set
CONFIG_MTD_UCLINUX_ADDRESS=0x8c000000
CONFIG_MTD_UCLINUX_ROM=y
# CONFIG_MTD_PLATRAM is not set
#
# Self-contained MTD device drivers
#
# CONFIG_MTD_DATAFLASH is not set
# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_SST25L is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set
#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# CONFIG_MTD_NAND is not set
# CONFIG_MTD_ONENAND is not set
#
# LPDDR flash memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_UBI is not set
# CONFIG_PARPORT is not set
# CONFIG_BLK_DEV is not set
#
# Misc devices
#
# CONFIG_AD525X_DPOT is not set
# CONFIG_ATMEL_PWM is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_TI_DAC7512 is not set
# CONFIG_BMP085_SPI is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_AT25 is not set
CONFIG_EEPROM_93CX6=y
# CONFIG_EEPROM_93XX46 is not set
#
# Texas Instruments shared transport line discipline
#
#
# Altera FPGA firmware download module
#
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# CONFIG_SCSI_DMA is not set
# CONFIG_SCSI_NETLINK is not set
# CONFIG_ATA is not set
# CONFIG_MD is not set
#
# Input device support
#
# CONFIG_INPUT is not set
#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set
#
# Character devices
#
# CONFIG_VT is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_N_HDLC is not set
# CONFIG_TRACE_SINK is not set
# CONFIG_DEVKMEM is not set
# CONFIG_STALDRV is not set
#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX3107 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_TIMBERDALE is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
CONFIG_SERIAL_EFM32_UART=y
CONFIG_SERIAL_EFM32_UART_CONSOLE=y
# CONFIG_TTY_PRINTK is not set
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_I2C is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y
#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
CONFIG_SPI_BITBANG=y
CONFIG_SPI_EFM32=y
# CONFIG_SPI_GPIO is not set
# CONFIG_SPI_OC_TINY is not set
# CONFIG_SPI_PXA2XX_PCI is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_DESIGNWARE is not set
#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_HSI is not set
#
# PPS support
#
# CONFIG_PPS is not set
#
# PPS generators support
#
#
# PTP clock support
#
#
# Enable Device Drivers -> PPS to see the PTP clock options.
#
CONFIG_PINCTRL=y
#
# Pin controllers
#
CONFIG_PINMUX=y
CONFIG_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
CONFIG_PINCTRL_EFM32=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIOLIB=y
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_SYSFS=y
#
# Memory mapped GPIO drivers:
#
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_EM is not set
#
# I2C GPIO expanders:
#
#
# PCI GPIO expanders:
#
#
# SPI GPIO expanders:
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MCP23S08 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_74X164 is not set
#
# AC97 GPIO expanders:
#
#
# MODULbus GPIO expanders:
#
# CONFIG_W1 is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_POWER_AVS is not set
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Native drivers
#
# CONFIG_SENSORS_AD7314 is not set
# CONFIG_SENSORS_ADCXX is not set
CONFIG_SENSORS_EFM32_ADC=y
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_GPIO_FAN is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM70 is not set
# CONFIG_SENSORS_MAX1111 is not set
# CONFIG_SENSORS_NTC_THERMISTOR is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_SHT15 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH56XX_COMMON is not set
# CONFIG_SENSORS_ADS7871 is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
#
# Broadcom specific AMBA
#
# CONFIG_BCMA is not set
#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_STMPE is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_EZX_PCAP is not set
# CONFIG_REGULATOR is not set
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
#
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
# CONFIG_FB is not set
# CONFIG_EXYNOS_VIDEO is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
# CONFIG_SOUND is not set
# CONFIG_USB_ARCH_HAS_OHCI is not set
# CONFIG_USB_ARCH_HAS_EHCI is not set
# CONFIG_USB_ARCH_HAS_XHCI is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
#
# Virtio drivers
#
# CONFIG_VIRTIO_BALLOON is not set
# CONFIG_VIRTIO_MMIO is not set
#
# Microsoft Hyper-V guest support
#
# CONFIG_STAGING is not set
#
# Hardware Spinlock drivers
#
CONFIG_CLKSRC_MMIO=y
# CONFIG_IOMMU_SUPPORT is not set
#
# Remoteproc drivers (EXPERIMENTAL)
#
#
# Rpmsg drivers (EXPERIMENTAL)
#
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set
#
# File systems
#
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_FS_POSIX_ACL is not set
# CONFIG_FILE_LOCKING is not set
# CONFIG_FSNOTIFY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_QUOTACTL is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_NTFS_FS is not set
#
# Pseudo filesystems
#
# CONFIG_PROC_FS is not set
CONFIG_SYSFS=y
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS is not set
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_JFFS2_FS is not set
# CONFIG_LOGFS is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
CONFIG_ROMFS_FS=y
# CONFIG_ROMFS_BACKED_BY_BLOCK is not set
CONFIG_ROMFS_BACKED_BY_MTD=y
# CONFIG_ROMFS_BACKED_BY_BOTH is not set
CONFIG_ROMFS_ON_MTD=y
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_NLS is not set
#
# Kernel hacking
#
CONFIG_PRINTK_TIME=y
CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_DEBUG_FS is not set
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
# CONFIG_LOCKUP_DETECTOR is not set
# CONFIG_HARDLOCKUP_DETECTOR is not set
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_STATS is not set
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_SPARSE_RCU_POINTER is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_NOMMU_REGIONS is not set
# CONFIG_DEBUG_WRITECOUNT is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_TEST_KSTRTOX is not set
CONFIG_ARM_UNWIND=y
# CONFIG_DEBUG_USER is not set
# CONFIG_DEBUG_LL is not set
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
# CONFIG_CRYPTO is not set
# CONFIG_BINARY_PRINTF is not set
#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IO=y
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_XZ_DEC is not set
# CONFIG_XZ_DEC_BCJ is not set
CONFIG_HAS_IOMEM=y
CONFIG_HAS_DMA=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
# CONFIG_AVERAGE is not set
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
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^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-11 13:43 ` Marc Kleine-Budde
@ 2012-12-11 13:52 ` Pawel Moll
2012-12-11 18:11 ` Pawel Moll
1 sibling, 0 replies; 9+ messages in thread
From: Pawel Moll @ 2012-12-11 13:52 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
> What about putting the notes section into the read only segment, i.e.
> the ROM?
Yes, this is probably a good idea. I'll see to it, thanks!
Pawe?
^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-11 13:43 ` Marc Kleine-Budde
2012-12-11 13:52 ` Pawel Moll
@ 2012-12-11 18:11 ` Pawel Moll
2012-12-12 8:22 ` Marc Kleine-Budde
1 sibling, 1 reply; 9+ messages in thread
From: Pawel Moll @ 2012-12-11 18:11 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
> What about putting the notes section into the read only segment, i.e.
> the ROM?
Could you, please, try the change below? It seems to do the job for me.
Pawe?
8<-------------------------
>From 01fe7810cfded11aff03d216d2adbcf673e78f65 Mon Sep 17 00:00:00 2001
From: Pawel Moll <pawel.moll@arm.com>
Date: Tue, 11 Dec 2012 18:09:14 +0000
Subject: [PATCH] ARM: vmlinux.lds: Move .notes section next to the rodata
The .notes, being read-only data by nature, was placed between
read-write .data and .bss. This was harmful in case of XIP
images, as it was placed in the RAM range, most likely far
from the ROM address, inflating the XIP images.
Moving the .notes at the end of the read-only section
(consisting of .text, .rodata and unwind info) fixes the problem.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
---
arch/arm/kernel/vmlinux.lds.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 36ff15b..31fa80e 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -131,6 +131,8 @@ SECTIONS
}
#endif
+ NOTES
+
_etext = .; /* End of text and rodata section */
#ifndef CONFIG_XIP_KERNEL
@@ -296,8 +298,6 @@ SECTIONS
}
#endif
- NOTES
-
BSS_SECTION(0, 0, 0)
_end = .;
--
1.7.10.4
^ permalink raw reply related [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-11 18:11 ` Pawel Moll
@ 2012-12-12 8:22 ` Marc Kleine-Budde
2012-12-12 8:44 ` Baruch Siach
2012-12-13 13:20 ` Pawel Moll
0 siblings, 2 replies; 9+ messages in thread
From: Marc Kleine-Budde @ 2012-12-12 8:22 UTC (permalink / raw)
To: linux-arm-kernel
On 12/11/2012 07:11 PM, Pawel Moll wrote:
> On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
>> What about putting the notes section into the read only segment, i.e.
>> the ROM?
>
> Could you, please, try the change below? It seems to do the job for me.
Works for me. The kernel image links to 640 KiB again.
> 8<-------------------------
> From 01fe7810cfded11aff03d216d2adbcf673e78f65 Mon Sep 17 00:00:00 2001
> From: Pawel Moll <pawel.moll@arm.com>
> Date: Tue, 11 Dec 2012 18:09:14 +0000
> Subject: [PATCH] ARM: vmlinux.lds: Move .notes section next to the rodata
>
> The .notes, being read-only data by nature, was placed between
> read-write .data and .bss. This was harmful in case of XIP
> images, as it was placed in the RAM range, most likely far
> from the ROM address, inflating the XIP images.
>
> Moving the .notes at the end of the read-only section
> (consisting of .text, .rodata and unwind info) fixes the problem.
>
> Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-12 8:22 ` Marc Kleine-Budde
@ 2012-12-12 8:44 ` Baruch Siach
2012-12-12 8:49 ` Marc Kleine-Budde
2012-12-13 13:20 ` Pawel Moll
1 sibling, 1 reply; 9+ messages in thread
From: Baruch Siach @ 2012-12-12 8:44 UTC (permalink / raw)
To: linux-arm-kernel
Hi Marc,
On Wed, Dec 12, 2012 at 09:22:09AM +0100, Marc Kleine-Budde wrote:
> On 12/11/2012 07:11 PM, Pawel Moll wrote:
> > On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
> >> What about putting the notes section into the read only segment, i.e.
> >> the ROM?
> >
> > Could you, please, try the change below? It seems to do the job for me.
>
> Works for me. The kernel image links to 640 KiB again.
Thant's the lowest figure I've ever seen for a kernel image. How do you get
there?
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-12 8:44 ` Baruch Siach
@ 2012-12-12 8:49 ` Marc Kleine-Budde
0 siblings, 0 replies; 9+ messages in thread
From: Marc Kleine-Budde @ 2012-12-12 8:49 UTC (permalink / raw)
To: linux-arm-kernel
On 12/12/2012 09:44 AM, Baruch Siach wrote:
> Hi Marc,
>
> On Wed, Dec 12, 2012 at 09:22:09AM +0100, Marc Kleine-Budde wrote:
>> On 12/11/2012 07:11 PM, Pawel Moll wrote:
>>> On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
>>>> What about putting the notes section into the read only segment, i.e.
>>>> the ROM?
>>>
>>> Could you, please, try the change below? It seems to do the job for me.
>>
>> Works for me. The kernel image links to 640 KiB again.
>
> Thant's the lowest figure I've ever seen for a kernel image. How do you get
> there?
It's for a nommu, armv7-m with thumb2 code. It doesn't have much
features, it lack /proc, /sys and even the networking subsystem. You can
find the .config in my previous mail [1].
Marc
[1] http://www.spinics.net/lists/arm-kernel/msg212007.html
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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^ permalink raw reply [flat|nested] 9+ messages in thread
* linker problem with xip kernel and recent toolchains
2012-12-12 8:22 ` Marc Kleine-Budde
2012-12-12 8:44 ` Baruch Siach
@ 2012-12-13 13:20 ` Pawel Moll
1 sibling, 0 replies; 9+ messages in thread
From: Pawel Moll @ 2012-12-13 13:20 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, 2012-12-12 at 08:22 +0000, Marc Kleine-Budde wrote:
> On 12/11/2012 07:11 PM, Pawel Moll wrote:
> > On Tue, 2012-12-11 at 13:43 +0000, Marc Kleine-Budde wrote:
> >> What about putting the notes section into the read only segment, i.e.
> >> the ROM?
> >
> > Could you, please, try the change below? It seems to do the job for me.
>
> Works for me. The kernel image links to 640 KiB again.
Cool, I'll get it into Russell's patch system then (with your Reported-
and Tested-by).
Thanks!
Pawe?
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2012-12-13 13:20 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-12-04 14:46 linker problem with xip kernel and recent toolchains Marc Kleine-Budde
2012-12-11 13:01 ` Pawel Moll
2012-12-11 13:43 ` Marc Kleine-Budde
2012-12-11 13:52 ` Pawel Moll
2012-12-11 18:11 ` Pawel Moll
2012-12-12 8:22 ` Marc Kleine-Budde
2012-12-12 8:44 ` Baruch Siach
2012-12-12 8:49 ` Marc Kleine-Budde
2012-12-13 13:20 ` Pawel Moll
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